My wife is suffering from severe anxiety

[Koays]

It's been over 8 months of her postpartum and lately I'm noticing some of her weird behaviour like constantly blaming herself about little stuff. She seemed too panicky, cursing a lot more than before and even worst started asking me for a divorce??! I dont cheat my wife but her blind jealousy is too much to handle. Some days I took 1 week off to take her on holiday and she's moody all the time. At one time she's happy and then get upset for small stuff. I don't know what's wrong with her emotions